Ponzi Scheme

They say that you are struggling to be what you purport.
Meanwhille, your flame is flickering. You’ve little real support.
Although you gave appearance of being strong and wise,
you were only surreptitious—a serpent in disguise.
You claimed to be clairvoyant, so why didn’t you foresee
the crumbling of the pyramid of your prosperity? 

Prompt words today are flickering, clairvoyant, surreptitious, purport and struggle.